LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 269 (Air Bag Restraint Systems) >> Diagnostic Tests >> DTC 53/B1810, 53/B1811, 53/B1812, 53/B1813: Driver-Side Air Bag No. 2 Squib Circuit Short, Open, Short To Ground Or Short To Battery >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Lexus ES 330. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition switch to LOCK position. Disable air bag system. See DISABLING SYSTEM  under DISABLING & ACTIVATING AIR BAG SYSTEM. If using Lexus hand-held tester, retrieve 5 digit DTC. See RETRIEVING AIR BAG SYSTEM DTCS USING LEXUS HAND-HELD TESTER  under DIAGNOSTICS. If DTC B1810 is retrieved, go to next step. If DTC B1811 is retrieved, go to step  4. If DTC B1812 is retrieved, go to step  5. If DTC B1813 is retrieved, go to step  6. If using diagnosis check wire, retrieve 2 digit DTC. See RETRIEVING AIR BAG SYSTEM DTCS USING DIAGNOSIS CHECK WIRE  under DIAGNOSTICS. If DTC 53 is retrieved, go to step  7.
  2. Inspect spiral cable connectors for disengaged lock button or deformed or damaged lock claw. If connectors are okay, go to next step. If connectors are not okay, replace spiral cable. See SPIRAL CABLE  under REMOVAL & INSTALLATION.
  3. Release short spring mechanism on air bag sensor assembly connector A31. See RELEASING SHORTING SPRING  under DIAGNOSTICS. Measure resistance between Yellow/Violet wire (circuit D2+) and Yellow/Orange wire (circuit D2-) on harness side of Orange upper spiral cable connector. See WIRING DIAGRAMS . If resistance is less than one megohm, go to step  13. If resistance is more than one megohm, go to step  10.
  4. Measure resistance between Yellow/Violet wire (circuit D2+) and Yellow/Orange wire (circuit D2-) on harness side of Orange upper spiral cable connector. See WIRING DIAGRAMS . If resistance is less than one ohm, go to step  11. If resistance is more than one ohm, go to step  15.
  5. Measure resistance between ground and Yellow/Violet wire (circuit D2+) on harness side of Orange upper spiral cable connector. See WIRING DIAGRAMS . Measure resistance between ground and Yellow (circuit D2-) wire on harness side of Orange upper spiral cable connector. If resistance is more than one ohm, go to step  11. If resistance is less than one megohm, go to step  17.
  6. Connect negative battery cable. Wait at least 2 seconds. Turn ignition switch to ON position. Measure voltage between ground and Yellow/Violet wire (circuit D2+) on harness side of Orange upper spiral cable connector. See WIRING DIAGRAMS . Measure voltage between ground and Yellow/Orange wire (circuit D2-) on harness side of Orange upper spiral cable connector. If voltage is less than one volt, go to step  11. If voltage is more than one volt, go to step  19.
  7. Inspect spiral cable connectors for disengaged lock button or deformed or damaged lock claw. If connectors are okay, go to next step. If connectors are not okay, replace spiral cable. See SPIRAL CABLE  under REMOVAL & INSTALLATION.
  8. Connect negative battery cable. Wait at least 2 seconds. Turn ignition switch to ON position. Measure voltage between ground and Yellow/Violet wire (circuit D2+) on harness side of Orange upper spiral cable connector. See WIRING DIAGRAMS . Measure voltage between ground and Yellow/Orange wire (circuit D2-) on harness side of Orange upper spiral cable connector. Voltage should be less than one volt. Turn ignition switch to LOCK position. Disconnect negative battery cable and wait at least 90 seconds. Measure resistance between Yellow/Violet wire and Yellow/Orange wire on harness side of Orange upper spiral cable connector. Resistance should be less than one ohm. Measure resistance between ground and Yellow/Violet wire on harness side of Orange upper spiral cable connector. Measure resistance between ground and Yellow/Orange wire on harness side of Orange upper spiral cable connector. Resistance should be more than one megohm. Release short spring mechanism on air bag sensor assembly connector A31. See RELEASING SHORTING SPRING  under DIAGNOSTICS. Measure resistance between Yellow/Violet wire and Yellow/Orange wire on harness side of Orange upper spiral cable connector. Resistance should be more than one megohm. If voltage and resistance readings are normal, go to next step. If voltage and resistance readings are not normal, go to step  21.
  9. Replace driver-side air bag module. See DRIVER-SIDE AIR BAG MODULE  under REMOVAL & INSTALLATION. Reconnect air bag sensor assembly harness connectors. Turn ignition switch to ON position. Wait at least 60 seconds. Clear DTCs. See CLEARING AIR BAG SYSTEM DTCS USING DIAGNOSIS CHECK WIRE  under DIAGNOSTICS. Turn ignition switch to LOCK position. Wait at least 20 seconds. Turn ignition switch to ON position. Wait at least 60 seconds. Retrieve DTCs. If DTC 53 is displayed, replace air bag sensor assembly. See AIR BAG SENSOR ASSEMBLY  under REMOVAL & INSTALLATION. If DTC 53 is not displayed, test is complete.
  10. Reconnect air bag sensor assembly connectors. Connect negative battery cable. Wait at least 2 seconds. Turn ignition switch to ON position. Wait at least 60 seconds. Clear DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES (DTCS)  under DIAGNOSTICS. Turn ignition switch to LOCK position. Wait at least 20 seconds. Turn ignition switch to ON position. Wait at least 60 seconds. Retrieve DTCs. See RETRIEVING DIAGNOSTIC TROUBLE CODES (DTCS)  under DIAGNOSTICS. If DTC B1810 is displayed, replace air bag sensor assembly. See AIR BAG SENSOR ASSEMBLY  under REMOVAL & INSTALLATION. If DTC B1810 is not displayed, go to step  12.
  11. If sent here from step  6, turn ignition switch to LOCK position. Disconnect negative battery cable and wait at least 90 seconds. If sent here from any step, reconnect air bag sensor assembly connectors. Connect jumper wire between Yellow/Violet wire and Yellow/Orange wire on harness side of Orange upper spiral cable connector. See WIRING DIAGRAMS . Connect negative battery cable. Wait at least 2 seconds. Turn ignition switch to ON position. Wait at least 60 seconds. Clear DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES (DTCS)  under DIAGNOSTICS. Turn ignition switch to LOCK position. Wait at least 20 seconds. Turn ignition switch to ON position. Wait at least 60 seconds. Retrieve DTCs. See RETRIEVING DIAGNOSTIC TROUBLE CODES (DTCS)  under DIAGNOSTICS. If DTCs B1811, B1812 or B1813 are displayed, replace air bag sensor assembly. See AIR BAG SENSOR ASSEMBLY  under REMOVAL & INSTALLATION. If DTC B1811, B1812 or B1813 are not displayed, go to next step.
  12. Turn ignition switch to LOCK position. Disconnect negative battery cable and wait at least 90 seconds. If sent here from step  11, remove jumper wire. If sent here from any step, connect spiral cable harness connectors to driver-side air bag module. Connect negative battery cable. Wait at least 2 seconds. Turn ignition switch to ON position. Wait at least 60 seconds. Clear DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES (DTCS)  under DIAGNOSTICS. Turn ignition switch to LOCK position. Wait at least 20 seconds. Turn ignition switch to ON position. Wait at least 60 seconds. Retrieve DTCs. See RETRIEVING DIAGNOSTIC TROUBLE CODES (DTCS)  under DIAGNOSTICS. If DTCs B1810, B1811, B1812 or B1813 are displayed, replace driver-side air bag module. See DRIVER-SIDE AIR BAG MODULE  under REMOVAL & INSTALLATION. If DTC B1810, B1811, B1812 or B1813 are not displayed, ensure air bag sensor assembly is in check mode. See CHECK MODE PROCEDURE  under DIAGNOSTICS. Check for intermittent air bag system fault. See AIR BAG WARNING LIGHT INTERMITTENT .
  13. Disconnect lower spiral cable harness connector. Measure resistance between Yellow/Violet wire and Yellow/Orange wire on harness side of lower spiral cable connector. If resistance is less than one megohm, replace wiring harness between air bag sensor assembly and spiral cable. If resistance is more than one megohm, go to next step.
  14. Release short spring mechanism on lower spiral cable harness connector. Measure resistance between Yellow/Violet wire and Yellow/Orange wire on harness side of Orange upper spiral cable connector. If resistance less than one megohm, replace spiral cable. See SPIRAL CABLE  under REMOVAL & INSTALLATION. If resistance is more than one megohm, ensure air bag sensor assembly is in check mode. See CHECK MODE PROCEDURE  under DIAGNOSTICS. Check for intermittent air bag system fault. See AIR BAG WARNING LIGHT INTERMITTENT .
  15. Disconnect lower spiral cable harness connector. Measure resistance between Yellow/Violet wire and Yellow/Orange wire on harness side of lower spiral cable connector. If resistance is more than one ohm, replace wiring harness between air bag sensor assembly and spiral cable. If resistance is less than one ohm, go to next step.
  16. Measure resistance between Yellow/Violet wire and Yellow/Orange wire on harness side of Orange upper spiral cable connector. If resistance is more than one ohm, replace spiral cable. See SPIRAL CABLE  under REMOVAL & INSTALLATION. If resistance is less than one ohm, ensure air bag sensor assembly is in check mode. See CHECK MODE PROCEDURE  under DIAGNOSTICS. Check for intermittent air bag system fault. See AIR BAG WARNING LIGHT INTERMITTENT .
  17. Disconnect lower spiral cable harness connector. Measure resistance between ground and Yellow/Violet wire on harness side of lower spiral cable connector. Measure resistance between ground and Yellow/Orange wire on harness side of lower spiral cable connector. If resistance is more than one megohm, replace wiring harness between air bag sensor assembly and spiral cable. If resistance is less than one megohm, go to next step.
  18. Measure resistance between ground and Yellow/Violet wire on harness side of Orange upper spiral cable connector. Measure resistance between ground and Yellow/Orange wire on harness side of Orange upper spiral cable connector. If resistance is more than one megohm, replace spiral cable. See SPIRAL CABLE  under REMOVAL & INSTALLATION. If resistance is less than one megohm, ensure air bag sensor assembly is in check mode. See CHECK MODE PROCEDURE  under DIAGNOSTICS. Check for intermittent air bag system fault. See AIR BAG WARNING LIGHT INTERMITTENT .
  19. Turn ignition switch to LOCK position. Disconnect negative battery cable and wait at least 90 seconds. Disconnect lower spiral cable harness connector. Measure voltage between ground and Yellow/Violet wire on harness side of lower spiral cable connector. Measure voltage between ground and Yellow/Orange wire on harness side of lower spiral cable connector. If voltage is more than one volt, replace wiring harness between air bag sensor assembly and spiral cable. If voltage is less than one volt, go to next step.
  20. Measure voltage between ground and Yellow/Violet wire on harness side of Orange upper spiral cable connector. Measure voltage between ground and Yellow/Orange wire on harness side of Orange upper spiral cable connector. If voltage is more than one volt, replace spiral cable. See SPIRAL CABLE  under REMOVAL & INSTALLATION. If voltage is less than one volt, ensure air bag sensor assembly is in check mode. See CHECK MODE PROCEDURE  under DIAGNOSTICS. Check for intermittent air bag system fault. See AIR BAG WARNING LIGHT INTERMITTENT .
  21. Restore short spring mechanism to original condition. Disconnect lower spiral cable harness connector. Connect negative battery cable. Wait at least 2 seconds. Turn ignition switch to ON position. Measure voltage between ground and Yellow/Violet wire on harness side of lower spiral cable connector. Measure voltage between ground and Yellow/Orange wire on harness side of lower spiral cable connector. Voltage should be less than one volt. Turn ignition switch to LOCK position. Disconnect negative battery cable and wait at least 90 seconds. Measure resistance between Yellow/Violet wire and Yellow/Orange wire on harness side of lower spiral cable connector. Resistance should be less than one ohm. Measure resistance between ground and Yellow/Violet wire on harness side of lower spiral cable connector. Measure resistance between ground and Yellow/Orange wire on harness side of lower spiral cable connector. Resistance should be more than one megohm. Release short spring mechanism on air bag sensor assembly connector A31. Measure resistance between Yellow/Violet wire and Yellow/Orange wire on harness side of lower spiral cable connector. Resistance should be more than one megohm. If voltage and resistance readings are normal, go to next step. If voltage and resistance readings are not normal, replace wiring harness between air bag sensor assembly and spiral cable.
  22. Connect negative battery cable. Wait at least 2 seconds. Turn ignition switch to ON position. Measure voltage between ground and Yellow/Violet wire on harness side of Orange upper spiral cable connector. Measure voltage between ground and Yellow/Orange wire on harness side of Orange upper spiral cable connector. Voltage should be less than one volt. Turn ignition switch to LOCK position. Disconnect negative battery cable and wait at least 90 seconds. Measure resistance between Yellow/Violet wire and Yellow/Orange wire on harness side of Orange upper spiral cable connector. Resistance should be less than one ohm. Measure resistance between ground and Yellow/Violet wire on harness side of Orange upper spiral cable connector. Measure resistance between ground and Yellow/Orange wire on harness side of Orange upper spiral cable connector. Resistance should be more than one megohm. Release short spring mechanism on lower spiral cable connector. Measure resistance between Yellow/Violet wire and Yellow/Orange wire on harness side of Orange upper spiral cable connector. Resistance should be more than one megohm. If voltage and resistance readings are normal, ensure air bag sensor assembly is in check mode. See CHECK MODE PROCEDURE  under DIAGNOSTICS. Check for intermittent air bag system fault. See AIR BAG WARNING LIGHT INTERMITTENT . If voltage and resistance readings are not normal, replace spiral cable. See SPIRAL CABLE  under REMOVAL & INSTALLATION.
scientia non olet · About LEMON Manuals